It looks like Valve is making their own standalone VR headset ,and made Steam Deck along the way to meet minimal amount of orders for custom chip. The chip can deliver 2.5 TFlops if it's clocked like other RDNA2 GPUs, it's almost 2x of Quest 2 GPU performance. Not sure about price though, it will be definitely higher than 300$ of heavily subsidized Quest 2, and I think price will be closer to current "Oculus for Business" offering, which is 800$. Not sure how it will compete with project Cambria.
There is, but it's not even close to being here yet so I don't know why everyone keeps bringing up. Meta's Cambria will be released before Valve's wireless headset.